Fatigue Damage in Steel Bridges Investigative Techniques and Retrofit Details

摘要

Crack growth in steel bridges is influenced primarily by detail type, live load stress range, the number of truck passages, and quality of bridge fabrication. Close-up visual inspection by experienced inspectors still remains the most effective nondestructive method for locating cracks along with dye penetrant and magnetic test methods. Instrumentation and field testing can provide important information to supplement inspection findings and analytical modeling results.